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网络引文文献的特性研究 总被引：6，自引：0，他引：6
王恺荣 《现代图书情报技术》2004,20(10):74-76
以5种情报学核心期刊近年来的载文为样本，对网络型引文文献的特性（网络引文的增长态势、域名分布、著录格式及链接功能等）进行了计量研究，为网络引文管理的规范化和科学化提供必要的定量依据。 相似文献
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Objectives
Evaluators examining the same evidence often arrive at substantially different conclusions in forensic assessments of child sexual abuse (CSA). This study attempts to identify and quantify subjective factors that contribute to such disagreements so that interventions can be devised to improve the reliability of case decisions.Methods
Participants included 1106 professionals in the field of child maltreatment representing a range of professional positions or job titles and years of experience. Each completed the Child Forensic Attitude Scale (CFAS), a 28-item survey assessing 3 forensic attitudes believed to influence professional judgments about CSA allegations: emphasis-on-sensitivity (i.e., a focus on minimizing false negatives or errors of undercalling abuse); emphasis-on-specificity (i.e., a focus on minimizing false positives or errors of overcalling abuse); and skepticism toward child and adolescent reports of CSA. A subset of 605 professionals also participated in 1 of 3 diverse decision exercises to assess the influence of the 3 forensic attitudes on ratings of case credibility.Results
Exploratory factor analysis identified 4 factors or attitude subscales that corresponded closely with the original CFAS scales: 2 subscales for emphasis-on-sensitivity and 1 each for emphasis-on-specificity and skepticism. Attitude subscale scores differed significantly by sample source (in-state trainings vs. national conferences), gender, years of experience, and professional position, with Child Protective Service workers unexpectedly more concerned about overcalling abuse and more skeptical of child disclosures than other professionals—a pattern of scores associated with an increased probability of disbelieving CSA allegations. The 3 decision exercises offered validation of the attitude subscales as predictors of professional ratings of case credibility, with adjusted R2s for the three exercises ranging from .06 to .24, suggesting highly variable effect sizes.Conclusions
Evaluator disagreements about CSA allegations can be explained, in part, by individual differences in 3 attitudes related to forensic decision-making: emphasis-on-sensitivity, emphasis-on-specificity, and skepticism toward child reports of abuse. These attitudes operate as predispositions or biases toward viewing CSA allegations as likely true or likely false. Several strategies for curbing the influence of subjective factors are highlighted including self-awareness of personal biases and team approaches to assessment. 相似文献3.
基于交易成本理论、技术创新理论与战略管理理论,引入企业竞争战略作为中介变量构建资产专用性、竞争战略与企业技术创新之间作用关系的理论模型,并利用我国在中小企业板上市的243家工业品制造业企业2010-2018年的平衡面板数据对模型进行实证检验.结果表明:企业的资产专用性对技术创新具有显著的负向影响,对成本领先战略具有显著的正向影响,对差异化战略具有显著的负向影响;成本领先战略对技术创新有负向作用但不显著,在资产专用性与技术创新之间起部分中介作用;差异化战略对技术创新具有显著的正向影响,在资产专用性与技术创新之间发挥了完全中介作用.研究结论对企业与政府的管理启示为:企业要设法降低资产专用性对技术创新的阻力,政府的技术创新政策制定应对资产专用性高的企业给予倾斜性的扶持,以促进企业发挥开展技术创新的积极性. 相似文献
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体育课的教学内容不仅要根据男女青年身体发育的一般特点和规律 ,而且要照顾其身体素质发展不同阶段的特殊性 ,使他们能在大学期间体质得到全面增强 相似文献
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双特异性磷酸酶（Dual Specificity Phosphatase）是酪氨酸磷酸酶家族中的一员,这个家族中的成员既能对磷酸化酪氨酸去磷酸化,也能对磷酸化丝／苏氨酸去磷酸化．此外,它们还在有丝分裂原激活蛋白磷酸酶信号途径（MAPK）中起重要生理功能．为了制备抗人双特异性磷酸酶的单克隆抗体（mAb）,以DUSP18重组蛋白为抗原免疫BALB／e小鼠,通过B淋巴细胞杂交瘤技术制备抗相应磷酸酶的mAb．用Western blot检测mAb对重组蛋白和细胞中天然磷酸酶的反应性,共获得6株可稳定分泌抗磷酸酶mAb的杂交瘤细胞株,为进一步研究双特异性磷酸酶的去磷酸化作用机理以及其在有丝分裂原激活蛋白磷酸酶信号途径（MAPK）中的信号转导提供强有力的工具． 相似文献
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利用流行病学中无金标准的筛检理论构建搜索引擎的评价指标,将用户体验得分和用户判断作为贝叶斯估计的先验信息,通过MCMC技术估算出Google简体中文和百度的灵敏度、特异度和检出率。 相似文献
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现代出版业对编辑素养提出了更高要求。编辑不仅要具备扎实的语言功底和突出的专业知识,而且要从文、理,中、西,电脑,审美等多方面充实自己,这样才能适应新时代的新要求。 相似文献
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标引的一致性是衡量主题标引质量的重要指标。综述了计算机类献主题标引不一致的四种表现，分析了引起标引不一致的原因，在此基础上探讨了计算机类献主题标引一致性的方法。 相似文献
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肖唐金 《贵阳金筑大学学报》2002,(3)
通过对英语表达的哲理剖析,学习者可以改善英语理解及表达能力。文化沉淀及文化表现、雅俗共赏、整体与部分、抽象与具体是学习者应掌握的哲理。 相似文献